I have always had strong maternal instincts. Even when I was still a child I cut out pictures of prams from newspapers and imagined the feeling of pushing my own pram through fresh winter snow and seeing the wheels' tracks behind me in the snow.
Hard though it may be to accept, remember that guilt is sometimes a friendly internal voice reminding you that you're messing up.
Sometimes you take a job for the money, sometimes you take it for the location, sometimes you take it for the script; there are just a number of reasons, and ultimately what you see is the whole landscape of it. But I can tell you from behind the scenes - that's what it is, as an actor.